1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (c) 2015-2021, NVIDIA Corporation.
8 #include <linux/dma-mapping.h>
19 #include <soc/tegra/pmc.h>
54 	writel(value, nvdec->regs + offset);  in nvdec_writel()
60 	struct iommu_fwspec *spec = dev_iommu_fwspec_get(nvdec->dev);  in nvdec_boot()
65 	if (nvdec->config->supports_sid && spec) {  in nvdec_boot()
71 		if (spec->num_ids > 0) {  in nvdec_boot()
72 			value = spec->ids[0] & 0xffff;  in nvdec_boot()
80 	err = falcon_boot(&nvdec->falcon);  in nvdec_boot()
84 	err = falcon_wait_idle(&nvdec->falcon);  in nvdec_boot()
86 		dev_err(nvdec->dev, "falcon boot timed out\n");  in nvdec_boot()
96 	struct drm_device *dev = dev_get_drvdata(client->host);  in nvdec_init()
97 	struct tegra_drm *tegra = dev->dev_private;  in nvdec_init()
102 	if (err < 0 && err != -ENODEV) {  in nvdec_init()
103 		dev_err(nvdec->dev, "failed to attach to domain: %d\n", err);  in nvdec_init()
107 	nvdec->channel = host1x_channel_request(client);  in nvdec_init()
108 	if (!nvdec->channel) {  in nvdec_init()
109 		err = -ENOMEM;  in nvdec_init()
113 	client->syncpts[0] = host1x_syncpt_request(client, 0);  in nvdec_init()
114 	if (!client->syncpts[0]) {  in nvdec_init()
115 		err = -ENOMEM;  in nvdec_init()
119 	pm_runtime_enable(client->dev);  in nvdec_init()
120 	pm_runtime_use_autosuspend(client->dev);  in nvdec_init()
121 	pm_runtime_set_autosuspend_delay(client->dev, 500);  in nvdec_init()
131 	client->dev->dma_parms = client->host->dma_parms;  in nvdec_init()
136 	pm_runtime_dont_use_autosuspend(client->dev);  in nvdec_init()
137 	pm_runtime_force_suspend(client->dev);  in nvdec_init()
139 	host1x_syncpt_put(client->syncpts[0]);  in nvdec_init()
141 	host1x_channel_put(nvdec->channel);  in nvdec_init()
151 	struct drm_device *dev = dev_get_drvdata(client->host);  in nvdec_exit()
152 	struct tegra_drm *tegra = dev->dev_private;  in nvdec_exit()
157 	client->dev->dma_parms = NULL;  in nvdec_exit()
163 	pm_runtime_dont_use_autosuspend(client->dev);  in nvdec_exit()
164 	pm_runtime_force_suspend(client->dev);  in nvdec_exit()
166 	host1x_syncpt_put(client->syncpts[0]);  in nvdec_exit()
167 	host1x_channel_put(nvdec->channel);  in nvdec_exit()
170 	nvdec->channel = NULL;  in nvdec_exit()
172 	if (client->group) {  in nvdec_exit()
173 		dma_unmap_single(nvdec->dev, nvdec->falcon.firmware.phys,  in nvdec_exit()
174 				 nvdec->falcon.firmware.size, DMA_TO_DEVICE);  in nvdec_exit()
175 		tegra_drm_free(tegra, nvdec->falcon.firmware.size,  in nvdec_exit()
176 			       nvdec->falcon.firmware.virt,  in nvdec_exit()
177 			       nvdec->falcon.firmware.iova);  in nvdec_exit()
179 		dma_free_coherent(nvdec->dev, nvdec->falcon.firmware.size,  in nvdec_exit()
180 				  nvdec->falcon.firmware.virt,  in nvdec_exit()
181 				  nvdec->falcon.firmware.iova);  in nvdec_exit()
194 	struct host1x_client *client = &nvdec->client.base;  in nvdec_load_firmware()
195 	struct tegra_drm *tegra = nvdec->client.drm;  in nvdec_load_firmware()
201 	if (nvdec->falcon.firmware.virt)  in nvdec_load_firmware()
204 	err = falcon_read_firmware(&nvdec->falcon, nvdec->config->firmware);  in nvdec_load_firmware()
208 	size = nvdec->falcon.firmware.size;  in nvdec_load_firmware()
210 	if (!client->group) {  in nvdec_load_firmware()
211 		virt = dma_alloc_coherent(nvdec->dev, size, &iova, GFP_KERNEL);  in nvdec_load_firmware()
213 		err = dma_mapping_error(nvdec->dev, iova);  in nvdec_load_firmware()
220 	nvdec->falcon.firmware.virt = virt;  in nvdec_load_firmware()
221 	nvdec->falcon.firmware.iova = iova;  in nvdec_load_firmware()
223 	err = falcon_load_firmware(&nvdec->falcon);  in nvdec_load_firmware()
232 	if (client->group) {  in nvdec_load_firmware()
235 		phys = dma_map_single(nvdec->dev, virt, size, DMA_TO_DEVICE);  in nvdec_load_firmware()
237 		err = dma_mapping_error(nvdec->dev, phys);  in nvdec_load_firmware()
241 		nvdec->falcon.firmware.phys = phys;  in nvdec_load_firmware()
247 	if (!client->group)  in nvdec_load_firmware()
248 		dma_free_coherent(nvdec->dev, size, virt, iova);  in nvdec_load_firmware()
261 	err = clk_prepare_enable(nvdec->clk);  in nvdec_runtime_resume()
278 	clk_disable_unprepare(nvdec->clk);  in nvdec_runtime_resume()
286 	host1x_channel_stop(nvdec->channel);  in nvdec_runtime_suspend()
288 	clk_disable_unprepare(nvdec->clk);  in nvdec_runtime_suspend()
298 	context->channel = host1x_channel_get(nvdec->channel);  in nvdec_open_channel()
299 	if (!context->channel)  in nvdec_open_channel()
300 		return -ENOMEM;  in nvdec_open_channel()
307 	host1x_channel_put(context->channel);  in nvdec_close_channel()
333 #define NVIDIA_TEGRA_186_NVDEC_FIRMWARE "nvidia/tegra186/nvdec.bin"
350 	{ .compatible = "nvidia,tegra210-nvdec", .data = &nvdec_t210_config },
351 	{ .compatible = "nvidia,tegra186-nvdec", .data = &nvdec_t186_config },
352 	{ .compatible = "nvidia,tegra194-nvdec", .data = &nvdec_t194_config },
359 	struct device *dev = &pdev->dev;  in nvdec_probe()
366 	err = dma_coerce_mask_and_coherent(dev, *dev->parent->dma_mask);  in nvdec_probe()
368 		dev_err(&pdev->dev, "failed to set DMA mask: %d\n", err);  in nvdec_probe()
374 		return -ENOMEM;  in nvdec_probe()
376 	nvdec->config = of_device_get_match_data(dev);  in nvdec_probe()
380 		return -ENOMEM;  in nvdec_probe()
382 	nvdec->regs = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);  in nvdec_probe()
383 	if (IS_ERR(nvdec->regs))  in nvdec_probe()
384 		return PTR_ERR(nvdec->regs);  in nvdec_probe()
386 	nvdec->clk = devm_clk_get(dev, NULL);  in nvdec_probe()
387 	if (IS_ERR(nvdec->clk)) {  in nvdec_probe()
388 		dev_err(&pdev->dev, "failed to get clock\n");  in nvdec_probe()
389 		return PTR_ERR(nvdec->clk);  in nvdec_probe()
392 	err = clk_set_rate(nvdec->clk, ULONG_MAX);  in nvdec_probe()
394 		dev_err(&pdev->dev, "failed to set clock rate\n");  in nvdec_probe()
398 	err = of_property_read_u32(dev->of_node, "nvidia,host1x-class", &host_class);  in nvdec_probe()
402 	nvdec->falcon.dev = dev;  in nvdec_probe()
403 	nvdec->falcon.regs = nvdec->regs;  in nvdec_probe()
405 	err = falcon_init(&nvdec->falcon);  in nvdec_probe()
411 	INIT_LIST_HEAD(&nvdec->client.base.list);  in nvdec_probe()
412 	nvdec->client.base.ops = &nvdec_client_ops;  in nvdec_probe()
413 	nvdec->client.base.dev = dev;  in nvdec_probe()
414 	nvdec->client.base.class = host_class;  in nvdec_probe()
415 	nvdec->client.base.syncpts = syncpts;  in nvdec_probe()
416 	nvdec->client.base.num_syncpts = 1;  in nvdec_probe()
417 	nvdec->dev = dev;  in nvdec_probe()
419 	INIT_LIST_HEAD(&nvdec->client.list);  in nvdec_probe()
420 	nvdec->client.version = nvdec->config->version;  in nvdec_probe()
421 	nvdec->client.ops = &nvdec_ops;  in nvdec_probe()
423 	err = host1x_client_register(&nvdec->client.base);  in nvdec_probe()
432 	falcon_exit(&nvdec->falcon);  in nvdec_probe()
442 	err = host1x_client_unregister(&nvdec->client.base);  in nvdec_remove()
444 		dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",  in nvdec_remove()
449 	falcon_exit(&nvdec->falcon);  in nvdec_remove()
462 		.name = "tegra-nvdec",